Hi Steve, Thanks. I detect on a large meadow and field about two kilometers from the American Cemetery in Margraten. I live nearby. Barracks used to stand on that land for the Black soldiers who dug the graves for the fallen,after the cemetery was reorganized, a lot of material was buried there,pieces of equipment, all sorts of things, including these tags. I’ve found intact ones and dog tags too, though most of these tags are broken from the plowing; it’s been pasture with cows for years now. I once returned a mess kit to the granddaughter and son of a fallen soldier; I’m still in touch with the granddaughter now and then. Her grandfather (the soldier) is buried at the cemetery, and before I sent the item back, I took photos of the objects at his grave,they found that wonderful.

PT 796, the 'Tail Ender', Static Display, 1970's prior to being housed indoors at Fall River  

It is also interesting this is a TBH II, yet still has the old LWH-style screw placement and velcro configuration from back when Gentex offered it with either a LWH-style mesh suspension or MICH-style pads on a few long rectangles of velcro. They later switched to the standard MICH-style screw placement and velcro "coins". I had thought that was what caused the name to be changed from "TBH" to "TBH II" but evidently not. 

UDT or BUDS?  

Another 'Royal Navigator', USS VEGA 1950's

The manufacturer of your USRCS marksman badge was the Hayes Brothers Co. of Newark, NJ. Attached is a Hayes Brothers Co. advertisement from the National Guard Magazine and descriptions of USRCS marksmanship badges.  

I have developed an interest in the history of the 551st Parachute Infantry Battalion Insigne, particularly in the the Who, When, Why and How it came to be created.   This signed reproduction of the design was in my father-in-law's militaria. Signed by Vincent Artz, credited with its creation. I do not know any details how my father-in-law acquired this.  However, while he was still able, he did go to Europe to attend multiple celebrations of the Liberation.     I did some research on the 551st Insigne, and came across an excellent article by Les Hughes on the topic. Les Hughes has been mentioned in numerous posts on this forum previously. The history of the design seems to be a bit hazy, but Les Hughes spoke to multiple 551st veterans, including Vincent Artz. It is worth a read:   https://www.insigne.org/551-insignia.htm  

While stationed at the Presidio of San Francisco he took this portrait picture while serving with the 2nd Field Artillery.

Yeager was eventually able to obtain a commission as a Lieutenant of the Field Artillery. He was commissioned as a 1st Lieutenant on November 26th, 1916. By the time of his transfer from the Philippines to San Francisco, California Yeager had been promoted to the rank of Captain. In San Francisco he joined the 2nd Field Artillery at the Presidio of San Francisco as battery commander in September 1917.